That's the point. My meter is awful. I calibrated for 7.01, cleaned it, and then calibrated for 4.01. But after cleaning and putting back on the 7, it did not measure 7 any more. For sure the drop meter are better than this shit.
Here in Brazil the company that distributes the bottles must inform the pH and other stuff in the bottle.
I know that's not the ideal. But it I can do it for now. :/
I kind of freaked out a little bit. Hehehe
Today was about time to water them at least. And Actually, I have flushed only the Hindu Kush, which is the one with the more stains on the leaves. The blue dreams are fine. Only one leave with stain.
I attached some pictures of the flowers. Some...
Not good, not good!
@Alter Jean @osowhom
I watered the Hindu Kush (the one with more stains) with a bottled mineral water with pH 6.6 and tds 30ppm (which I use to calibrate my meter).
The runoff pH was 5.8 and tds was 180ppm, the water had a light green tone.
I am thinking to buy and use a...
@Alter Jean
For now, I took off the uvb lamp and also took off a kind of "lens" of the lamps. They were concentrating the light a lot in some spots.
About the pH, I was reading around Web. I am thinking to compare the pH of my watering to the runoff water to have an idea of the soil pH...
good to know @osowhom .
I will invest in a better PH meter next grow for sure! Mine is annoying me a lot!
Today I need to water them, I will try to take care of of this.
Thanks for the help @Alter Jean .
The one I was using is a ReptiGlo 5.0.
I decided to use this time because in my first grow the flower was big but not dense and not too many trichomes.
Considering the damage on the leaves. Better to leave out of the grow. Just for caution.
Tomorrow I will try...
Thanks guys!
I Took off the uvb light. Hope only that will avoid further problems.
In any case, I attached more pictures of the plants. I turned off most of the red light for better visual.
@curious2garden @Rozgreenburn
I am using around 200 w of Chinese led lights plus one reptile uvb lamp.
I was using the uvb in a inproper way. According to some sources it should be used for only 2-4 hour a day. I was using 12h with the others.
I add nutrient once in a week. 0.4g powder feeding...
Hello everyone. SInce yesterday I have noticed some strange things in the leaves.
The plants are in their 5th week of flowering stage.
I took a look at the internet and it seems that it magnesium deficiency, which can be caused by low pH levels.
I am using the fertiliser Powder Feeding. I am...